rudin



Aug. 11, 1925. 1,549,050

f K. v. RUDIN ZERO SETTING MECHANISM FOR CALCULATING MACHINES OF THE ODHNER TYPE Filed June 21, 1924 2 Sheeis-Sheet' 1 Aug. 11, 1925. 1,549,050

K. v. RUDIN ZERO"SETTING MECHANISM FOR CALCULATING MACHINES OF THE ODHNER TYPE Filed June 21. 1924 2 Sheets-Sheet 2 Patented Aug. 11, 1925.

UNITED STATES PATENT oFFIcE.

KARL VIKTOR RUBIN, OF STOCKHOLM, SWEDEN.

Application filed June 21, 1924. Serial No. 721,525.

To all whom it may concern:

Be it known that l, Kenn VIKTOR RUBIN, a citizen (or subject) of Kingdom of Sweden, residing at Stockholm, Sweden, have invented certain new and useful Improvements in Zero-Setting Mechanism for Calculating Machines of the Odhner Type, of which the following is a specification.

My present invention relates to improvements in calculating machines of the Odhner type and more particularly to the zero set ting mechanism in said 1115101111188 Calculating machines of the class described in my U. S. Patent No. 1,442,00el iave setting d1sks with cam disks having an adjustable number of teeth, adapted to transmit the values set to a registering mechanism which is mounted on a slidable carriage adapted to be shifted laterally along the setting mechanism, so that its registering elements or numeral wheels can be brought into cooperation with any of the setting disks with cam disks of the setting mechanism. I

One oi the objects of this invention is to provide means for resetting said cam disks to zero.

With this and other objects in view the invention consists of the combination of ele ments described hereinafter and particularly pointed out in the appendedclaims.

For the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawings in which the same letters of reference have been used in all the views to indicate corresponding parts.

in said. drawing Figure l is an elevation of an embodiment of a calculating machine according to the present invention, whereby the setting mechanism only is illustrated with the cover plates removed and with the bottom plate in section.

Figure 2 is a transversal section on the line HTT of Fig. 1, and Figs. 85 inclusive are similar sections on the line HE ITT of Fig. 1, illustrating three ditlerent positions of the zero setting member proper.

Fig. 6 is a side view of a disk with a locking pin.

Fig. 7 illustrates said locking pin on an enlarged scale.

Figs. 8 and 9 illustrate on the same enlarged scale two other embodiments of the locking pin.

In the patent above referred to the different parts of the calculating machine have been nearer disclosed and on account hereof only such parts which constitute the present invention are here illustrated and described in connection with this invention.

In accordance to the above mentioned patent the setting member for the cam disks comprises a shaft actuating said disks and operated from the Zeroizing member proper, which shaft is adapted to be manually turned from without, so that said shaft, during action of the zeroizing member proper, resets all the cam disks to their zero position. Said shaft is hereby disposed within the periphery of the setting disks and the cam disks.

In the present embodiment the shaft is likewise located within the periphery of the setting disks and the cam disks, said shaft, however, consisting of a bar or such like 88, which connects two pins or arms 87, pivotally arranged about the shaft 14; of the setting mechanism or any other part connected with said mechanism. Said bar 88 passes through all the intermediate setting disks 1, and cam disks 2 which in order to permit the intersection of said bar are provided with slots 90.

The pins or arms 87 are if necessary provided with lugs or shoulders 93 to enable the attachment of the bar 88. In Fig. 1 one of said disks only is provided with such a lug. The end of the bar 88 which faces the zeroizing member proper is extended and enters a slot or an opening 9st in a disk 95 loosely mounted on the shaft 1 The slot or opening 94 preferably in the moving direction of the disks is of a larger size than the diameter of the bar 88, in order to enable a relative motion between the disk and the bar. The disk 95 is provided with a notch or recess 96 in which a lug 98 or such like extending from the zeroizing member 97 proper is adapted to enter during the Zeroizing operation.

The zeroizing member proper is journalled on a journal 99 eccentrically in relation to the shaft 14; of the setting mechanism or more properly in relation to the centre of oscillation of the bar 88.

Thezeroizing member-proper which consists of an arm or a lever is actuated by a spring 100 (Fig. 1) which moves said member back into its inoperative position. The zeroizing member further is provided with a handle 101 extending outside the cover of the machine, said hand e being manually operated in a usual way by means of a knob or such like.

It must be observed, that the disk 95 preferably is circular and provided with a notch 96 whereby it is attained, that the seroizing member cannot be actuated during the rot-ation of the setting mechanism and when the usual crank not yet has been moved into its initial position, viz. in these two positions the shoulder or knob 98 is not positioned just opposite the recess and hereby the member is locked by resting against the circular edge of the disk The machine is in the same manner as in the above men tioned patent provid d with a device for setting the cam disks Stpdiljf-Fitel). The present devi'e for that purpose, however, differs from that one described in the cited patent and comprises in known way locking pins displaceable in a radial direction in each setting disk and substituting the loci-:- ing pawls described in patent mentioned above.

Said locking pins which are illustrated in Figs. 6-9 inclusive in three different embodiments are actuated by the zeroizing mechanism in the same way as in the patent cited above, so that the pins during the zeroizing operation will be completely released from the appertaining cam disk and hereby facilitate the zeroizing operation. Said pins also will be completely released from the appertaining cam disks at an incorrectly or not completed zercizing operation, and thus prevent their set-ting step-by-step.

The locking pins 105 in a known way are provided with a chisel shaped locking tooth 111 and a guiding shoulder 110 which engages a groove in the setting disk. Each pin besides is provided with a spring 109, which at its one end rests against the bottom of the recess 10'? and atits rear end rests against the collar or shoulder 108 of the pin.

In order to enable the locking pins 105 to be moved out of engagement with the cam disks when resetting same into their Zero position there is in accordance to the present invention provided on the side of the pins a shaft 112 intersecting the setting mechanism, said shaft having for each looking pin a pin or lug 113. Said lug 113 is arranged in such a way in relation to the shoulder 110 on the locking pins, that said locking pins when the shaft is rotated in known way by means of the zeroizing men's ber proper gets displaced in a radial direction against the centre of the setting disk a distance equal to or somewhat in excess of the length 01 1116 teeth of the cam disk. By this the cam disks will be completely released from the locking pins and easily re turned into their zero position.

The shaft 112 may also by means of pins or lugs enter into a recess or groove 1141 on each locking pin (Fig. 8).

The locking pin may also be arranged in the way illustrated in Fig. 9, whereby the pin is provided with a conical locking tooth 116 so as to enable a full revolution of the locking member. The pin or member in this occasion is provided with a recess or groove 115, running round the pin, whereby the lug 113 engages said recess.

The device for setting the cam disks stepby-step may also be provided with pawls journalled upon shaft 7 1 intersecting the setting mechanism of the machine, whereby said pawls under spring action engage circular acks 76, one for each cam disk. Said shaft hereby in a known way is provided with an arm 78 which during the zeroizing operation is adapted to slide along a curve shaped surface or such like 80 so as to bring the pawls out of engagement with the cam disks.

According to the present invention said curve shaped surface 80 is journalled upon a lever 102 or such like of the disk 95. The lever 102 is double-armed, the one arm being provided with the curve shaped surface 80, the other arm being actuated by a spring, aiming to keep the arm pressed against a surface limiting the inoperative position of same, for instance the mantle surface, and against a sleeve 103, mounted upon the shaft 14; of the setting mechanism.

The curve shaped surface 80 of the arm 102 is so arranged in relation to the arm 7 8, that the arm 102 during the movement of the zeroizing member proper back into the inoperative position slides along a curve shaped surface 10% of the arm 78, in and for the purpose to keep the cam disks locked during said back movement.

The described device is operated in the following way Having performed in a usual way a setting of the values and a calculating operation, and when zeroizing of the cam disks is to be performed, the handle 101 is seized and moved upwards, i. e. in the moving direction of the cam disks during the zero icing operation. Hereby the shoulder or lug 98 on account of the excentrical bearing of the zeroizing member proper engages the recess 96 and imparts the movement to the disk 95. This imparting causes the arm 102 to slide with its curve shaped. surface 80 below the arm 78 whereby said arm together *ith the shaft 7 1 is turned outwards, and accordingly the pav-Jls 75 also are turned outwards out off engagement with the cam disks (or the locking pins 1053 are removed out of engagement with the same) so that the same will be completely released. lVhen this has been performed the bar 88 g seized by the edge of the oblong reces.

and imparted the movement of the zeroiziug member proper. The recess 0r slot 94 above mentioned has a larger length than the exact diameter of the bar in and for the purpose to permit the movement of the disk 95 in relation to the bar, so that the pawls get time to be turned out of engagement with the cam disks (or the locking pins 105 be displaced out of engagement with the same), ere the bar 88 has been caught, and thus the bar 88 will be actuated upon by the disk at a moment after the disk has been brought into movement. hen the disk or the bar has been actuated all displaced cam disks are rotated whether by the direct contact of the bar with the disks or by the intervening of the shoulders or lugs 92. Hereby the curve shaped surface during all the time slides between the arm '78 and its support (the sleeve 103) on account of which the pawls all the time are kept out of engagement with the cam disks. The resetting of the same into the zero position is also essentially facilitated thereby, that they are so designed, that having received an impulse to be reset in their zero position they proceed said returning movement by themselves until the condition of equilibrium has been attained.

When the zeroizing operation is completed the arm 7 8 falls down with its curve shaped surface 104: behind the curve shaped surface 80 and the cam disks will immediately be locked by the pawls 7 5. The zeroizing member proper together with the disk 95 and the bar 88 are hereafter automatically moved backwards during the action of the spring 100 into the initial position and during said movement the arm 102 slides outside the curve shaped surface 104 of the arm 78 Also cam disks are thus during the movement held in a locked position.

I claim 1. In a calculating machine of the Odhner type, in combination setting disks having adjustable teeth and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, said cam disk shaft having pivotally mounted arms, joined by means of said setting shaft actuated by zeroizing member and passing through intersecting openings in all the intermediate setting disks and said cam disks.

2. In a calculating machine of the Odhner type, in combination setting disks having adjustable teeth and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, said cam disk shaft having pivotally mounted arms, oined y means of said setting shaft actuated by a Zeroizing member and passing through intersecting openings in all the intermediate setting disks and said cam disks, said openings running along a part of a circle, a yielding member adapted to actuate said set ting shaft so as to keep the same normally in its one end position, and said zeroizing member arranged to move said setting shaft into its other end position and thereby returning all the cam disks to Zero.

3. In a calculating machine of the Odhner type, in combination setting disks having adjustable teeth and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, said cam disk shaft having pivotally mounted arms, joined by means of said setting shaft actuated by a zeroizing member and passing through intersecting openings in all the intermediate setting disks and said cam disks, said openings running along a part of a circle, a yielding member adapted to directly actuate said setting shaft so as to keep the same normally in its one end position, and said Zeroizing member arranged to move said setting shaft into its other end position and thereby returning all the cam disks to Zero.

1. In a calculating machine of the Odhner type, in combination setting disks having adjustable teeth and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing throu h said 0 aenin 's of said disks said cam disk shaft provided with disks, loosely mounted on the shaft, said latter CllSKS having means for the attachment of said setting shaft, connecting said disks and adapted to reset the cam disks to zero.

5. In a calculating machine of the ()dhner type, in combination shoulder disks, setting disks having adjustable teeth and cam disks actuating said teeth, a shaft for said disks, said shoulder and setting disks provided with openings for a setting shaft intersecting said disks, and said cam disks provided with a circular central opening for the passage of said shaft, each cam disk having a shoulder adapted to be seized by the said setting shaft during the zeroizing of the cam disks.

6. In a calculating machine of the Odhner type, in combination setting disks having adjustable teeth and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, a zeroining member adapted to be manually turned from without, said zeroizing member being loosely mounted on the shaft of the setting mechanism and adapted to be actuated by an arm excentrical in relation to said shaft of the setting mechanism and having lugs to actuate said disk, which actuate said setting shaft to reset the cam disks into their Zero position.

7. In a calculating machine of the Odhner type, in combination setting disks having adjustable teeth and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, a Zeroizing member adapted to be manually turned from without, said zeroizing member being loosely mounted upon the shaft of the setting mechanism and at its periphery provided with a notch receiving a lug extending from the zeroizing member, said recess and lug provided to prevent the Zeroizing member from being actuated during the rotation of the setting mechanism.

8. In a calculating machine of the Odhner type, in combination, settin disks and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, a shaft intersecting the setting mechanism, said shaft having locking members, adapted to engage circular racks of each cam disk, said intersecting shaft provided with an arm adapted to slide during the zeroizing operation along a curve shaped surface in order to bring the locking members out of engagement with the cam disks, said curve shaped surface arranged upon a lever mounted on a disk loosely mounted on the shaft of the set ting mechanism, said lever being double armed, the one arm provided with a curve shaped surface and the other arm actuated by a spring to keep the arm against a surface, limiting the inoperative position of the arm, said surface consisting of a mantle surface of a sleeve journalled on the shaft of the setting mechanism.

9. In a calculating machine of the Odhner type, in combination, setting disks and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, a shaft intersecting the setting mechanism, said shaft having locking members, adapted to engage circular racks of each cam disk, said intersecting shaft provided with an arm adapted to slide during the Zeroizing operation along a curve shaped surface in order to bring the locking members out of engagement with the cam disks, said curve shaped surface arranged upon a lever mounted on a disk loosely mounted on the shaft of the setting mechanism, said lever provided with a curve shaped surface and the other arm actuated by a spring to keep said lever against a surface limiting the inoperative position of the same, said curve shaped surface arranged in such a relation to said arm, extending from the locking member shaft, that the lever supporting the curve shaped surface during the back movement of the zeroizing member into inoperative position slides along the outer surface of a curve shaped surface arranged on the lever.

10. In a calculating machine of the Odhner type, in combination, setting disks and cam disks actuating said teeth, said disks lnwing opening between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, a zeroizing member adapted to be manually turned from without, said zeroizing member loosely mounted on the shaft of the setting mechanism and adapted to be actuated by an arm excentrical in relation to said shaft of the setting mechanism and having a lug to actuate said disk, which actuate said setting shaft to reset the cam disks into their zero position, said setting shaft entering into a slot of the disk, said slot in the moving direction of the disk having a greater length than the diameter of said bar.

11. In a calculating machine of the Odhner type, in combination, setting disks and cam disks actuating said teeth, said disks having openings between, their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, said setting disks provided with radially displaceable locking pins, adapted to engage circular racks on the cam disks and thereby causing the cam disks only to be turned step-by-step, said looking pins provided with a guiding shoulder, entering into the appertaining setting disk, a shaft at the side of said locking pins intersecting the setting mechanism, said shaft having a lug for each locking pin and actuated from the zeroizing member in such a way so as to be turned during the zeroizing operation and thereby by the intervening of the lugs and guiding lugs displacing the locking pins inwardly towards the centre of the setting disks.

12. In a calculating machine of the Odhner type, in combination, setting disks and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, said setting disks provided with radially displaceable locking pins, adapted to engage circular racks on the cam disks and thereby causing the cam disks only to be turned step-by-step, said locking pins provided with a guiding shoulder, entering into the appertaining setting disk, a shaft at the side of said locking pins intersecting the setting mechanism, said shaft having a lug for each locking pin and actuated from the zeroizing member in such a Way so as to be turned during the zeroizing operation and thereby by the intervening of the shoulder and guiding lugs displacing the locking pins inwardly towards the centre of the setting disks, said locking pins provided with a recess for receiving the lugs extending from the shaft.

13. In a calculating machine of the Odhner type, in combination, setting disks and cam disks actuating said teeth, said disks having openings between their centers and peripheries, a shaft for said disks, a setting shaft passing through said openings of said disks, said setting disks provided with radially displaceable locking 7 pins, adapted to engage circular racks on the cam disks and thereby causing the cam disks only to be turned step-by-step, said locking pins provided with a guiding shoulder, entering into the appertaining set ting disk, a shaft at the side of the said locking pins intersecting the setting mechanism, said shaft having .a lug for each locking pin and actuated from the zeroizing memher in such a way so as to be turned during the zeroizing operation and thereby by the intervening of the shoulder and guiding lugs displacing the locking pins inwardly towards the centre of the setting disks, said locking pins provided with a conical locking tooth and a recess, running around said pin, in order to secure the engagement with the pin under all circumstances, independently of the turning of the locking pins.

In testimony whereof I have hereunto affixed my signature.

KARL VIKTOR RUDIN. Witness:

L. BERG VON LINDE. 

